# 11. DeFi & Aave ### Aave * It is a borrowing and lending platform for cryptocurrencies * APY Based (Interest / Haraam) *** ### Uniswap * Decentralized app that allows us to trade/swap assets and tokens with each other * Decentralized stock exchange of tokens *** ### WETH * Stands for Wrapped Ethereum * Way to tokenize our native L1 ethereum blockchain native token *** ### Mainnet Forking * Instead of using mock contracts in our hardhat deloy scripts, we can use the original mainnet contract address and use hardhat forking * Hardhat mainnet forking forks the mainnet (only the thing that you want to use) which allows us to eliminate need of mocks * *** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://notes.nomanaziz.me/development/blockchain/freecodecamp-course/11.-defi-and-aave.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.